EOS ESD 介绍(中英).pdf

Electrical Overstress (EOS) Electrostatic Discharge (ESD) Overview Prepared by: Donna Robinson-Hahn, PhD Director; Fairchild EOS ESD Programs 电过载和静电释放概述电过载和静电释放概述 电过载和静电释放概述电过载和静电释放概述 Presented Prepared by: Donna Robinson-Hahn, PhD Outline of Presentation Background ESD Information Definitions Chip ESD Protection Circuits Characterization ESD Protection During Assembly Test Contact Information 陈述要点陈述要点 陈述要点陈述要点 静电释放的背景和定义 芯片ESD保护电路及特性 封装及测试过程中的ESD保护 联系信息 The Facts about ESD The effects of ESD are expensive. ESD Protection Strategies: 1. On-Chip - Designed-in ESD device protection (CDM HBM) 2. Off-Chip - ESD prevention required during wafer fab, assembly, test, shipping and board level assembly ESD的要素的要素 的要素的要素 ESD的损失是非常昂贵的 ESD的保护策略 1. 芯片内- 芯片内的保护电路 (CDM HBM) 2. 芯片外 - 在晶圆制造, 封装测试运输及PCBA的封装过程的 ESD保护. Electrostatic Discharge (ESD) airdischarge (nocontact) chargedperson Conductivesurface 静电释放静电释放 (ESD) 静电释放静电释放 空气释放 (无接触) 放电人 导电表面 Definitions Static Electricity: …is an excess or deficiency of electrons on a surface. It’s caused by contact separation of two dissimilar materials (including solids, liquids gases) ESD or Electrostatic Discharge: …is the transfer of electrons between bodies at different static potentials. It’s caused by direct contact or induced by an electrostatic field 定义定义 定义定义 静电静电: 静电静电 …它是表面电子的多余或缺乏，它是由于两种不同物质 的接触或分离 （包括固体，液体和气体） 静电释放静电释放 静电释放静电释放 …它是物体间由于电势的差异而导致的电子迁移，它可 以通过直接传输或者静电场来进行传输． ESD Damage Site in MOS IC Damaged